A plaster cast from the collections of the Victoria and Albert Museum -
This fig-leaf was hung on the David on the occasion of visits by royal ladies. It was last used in the time of Queen Mary (1867-1953). According to anecdotal information, on her first encounter with the cast of 'David', Queen Victoria was so shocked by his nudity that a firm suggestion was made that something has to be done. Consequently, the correctly proportioned fig leaf was created and stored in readiness for any visit the Queen might make, for which occasions it was hung on the figure from two strategically implanted hooks.
The item is presently displayed in a case attached to the back of the pedestal on which the David replica stands.
Link, via A London Salamagundi.